Improvement in operating picker-staff for looms



f shown in the drawings.

y UNITED STATES.

PATENT OFFICE.

EDWARD WRIGHT, OF WORCESTER, MASSACHUSETTS.

IMPROVEMENT IN OPERATING PICKER-STAFF FOR LOOMS.

Specica-tion forming part of Letters Patent No. 70,308, dated October29, 1867.

`clare that the following' is a full, clear, and

exact description of the same, reference being had to the accompanyingldrawings, forming a part ot' this specitication, in which- Figure lrepresents a perspective view of lny improved device, and Fig. 2represents a longitudinal central section ot' the device shown in Fig.l.

To enable those skilled in thc art to which my invention belongs to makeand use the same, I will proceed to describe it in detail.

The part marked Ais the slotted base upon which the tongned picker-staffstand B rests, and rocks back and forth when in operation, as describedin my previous application for Letters Patent. The base A is providedwith a hole, C, and set-screw a, by which itis fastened to therocker-iron of the lay. The picker-staft is fastened in the recess D inthe upright part of stand B.- The rear part of the stand B is slottedout and rounded oft' to receive the rear end, b, ot' thelever E, whichhas a curved recess, c, to fit the rounded part of the stand B, as fullyshown in Fig. 2.

From the rear of base A projects down the arm F, having a hole in itslower end, through which the rear end of rod G phys, the front end ofsaid rod being enlarged, so as to have shonldersf, against which thefront of the spiral spring H presses, while the rear ofthe spring bearsagainst the arm F. The front end of rod Gr is slotted or forked to titthe arm I, which extends down from the lever E, as The lower end of armI is provided with a'lip, g, upon which the front of rod G rests.

The operation is as follows: When the picker-staft is thrown forward thefront part, J, of the picker-stand B rocks down upon the base A, itstongue h entering the slot i in the base A. As the front end, J, of thepickerstand descends, the rear end, K, rises, and thereby lifts the rearend, b, of lever E, which throws back arm I, thus compressing thespringr H. As

soon as the picker-staff is released, the action of spring H on arm Icauses the pickerstaff to start back, thus avoiding a severe concussionot' the point of the shuttle against the picker on the staff'. As soonas the picker-stand has passed back of theposition shown in the drawingsits rear point, K, begins to bear on the end L of the base A, whichcauses the rear end, b, of lever E again to he elevated, thus throwingback arm I and compressing spring H, the resistance of which arrests themotion of the picker-stan", and thus prevents the shuttle from drivingthe picker and upper end of the picker-statt' hard against the end ofthe rear end ot' the shuttle-box.

The front 0I' lever E has a curved recess, d, which fits the roundedpart e on hase A. (See Fig. 2.)

Having described my improved parallel mo* tion for looms, what I claimtherein as new and of I ny invention, and desire to secure by LettersPatent, is

The combination, with lever E and its arm I, of the arm F, rod G, andspring H, substantially as and for the purposes set forth.

EDWARD WRIGHT.

Witnesses:

THos. H. DODGE, D. L. MILLER.

